Induction loop

In dealing with sound and hearing, we must not forget people with hearing difficulties.

For hearing aids users, the inductive loop is one of the best audio transmission methods; with it we: get rid of the unpleasant noise of the surroundings and we can concentrate listening to the desired message.

Why install a hearing loop?

  • Eliminates unwanted noise from the background
  • No need to use an additional receiver / headset
  • The signal goes directly to the hearing aid
  • It can be used by anyone with a suitable standard hearing aid
  • Is not noticeable
  • Cost-effective
  • A large number of users can use 1 system


How does the loop work?

The inductive loop works by turning the sound through the microphone into an electrical signal, which is then amplified and driven into a loop located in the room. The listener sets his hearing instrument in “T” mode (telephone coil). Thus, in the hearing aid, the voltage generated by the inductive loop signal is induced. The device turns the signal into sound and transfers it to the ear.

We offer fixed and portable inductive loops that can be used in various rooms and at various events (lecture rooms, meeting rooms, theaters, cinemas and churches, as well as personal windows in banks, post offices and administrative units, in working and private premises …).

How to decide which loop is appropriate?

When deciding on a fixed inductive loop in the room, an appropriate guide should be installed on the circumference of the desired surface. Such a loop must be connected to the appropriate amplifier to which the desired audio source is connected (microphone in front of the speaker, microphone in the room, player, computer …)
Usually such a method is used in:

  • halls,
  • classrooms,
  • waiting rooms and similar public spaces.

The “Inductive Field” can also be created locally for each listener individually.

For this purpose, we use a portable battery system. In this case, the speaker has a pocket transmitter on which a tie or head microphone can be connected. The listeners have pocket-sized receivers on which they can have a connected inductive loop / string that can create the appropriate “inductive field” from which the listeners will receive the desired audio information. This system is also suitable for people with poor hearing, non-users of hearing aids, since instead of the oval loop, the classical headphones or the earpiece can be connected to one ear instead.

Since each listener needs his pocket receiver, it is necessary to predict their number.

Usually such a method is used in:

  • lecture rooms and classrooms with a small number of bad-hearing users or
  • where it is not possible to install a loop conductor in the room.

Because the system is run by the battery, it is often used for various group management in the outdoors.

The inductive loop transmission system can also be in the form of a “bag”, which is placed between the speaker and the listener.

It is used at:

  • administrative counters (banks, receptions, post offices),
  • in interviews,
  • for participation in smaller groups, etc.

Thanks to its battery power and compact design, it offers immediate and easy operation.

To sum up, you need to define the purpose of the inductive loop in order to choose the right type of inductive system.


Two educational films for the more curious:
Video 1  and Video 2

Sources: DGN Celje, Hearing link